Yang Renjie, Liu Changsheng, Li Liang, Chen Liang, Liu Weiyin Vivian, Zha Yunfei
Department of Radiology, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, People's Republic of China.
Department of Orthopaedics, Renmin Hospital of Wuhan University, Wuhan 430060, Hubei, People's Republic of China.
Comb Chem High Throughput Screen. 2022;25(6):1024-1030. doi: 10.2174/1386207324666210322125827.
We aimed to investigate the feasibility of multi-acquisition with variable resonance image combination slab selectivity inversion recovery (MAVRIC SL IR) sequence on 3.0 T MRI in patients with anterior cervical discectomy and fusion (ACDF) surgery compared to bandwidth-optimized short tau inversion recovery (STIR) sequence.
Paired sagittal MR images of MAVRIC SL IR and bandwidth-optimized STIR sequences were acquired and analyzed for 21 patients after ACDF surgery with PEEK cage-plate construct. Quantitative comparisons were made on the metal artifact areas of paired mid-sagittal images. In qualitative analysis, the consistency of fat suppression and visibility of anatomic structures (bonemetal interface, surrounding soft tissues, and spinal cord) were independently assessed, based on a five-point scale by two musculoskeletal radiologists, who were blind to the images and patient details.
The application of the MAVRIC SL IR sequence resulted in a significant reduction of 48% in the mean area of metal artifacts (t = -7.141, p < 0.001). Based on the comments received from both the reviewers, the MAVRIC SL IR sequence showed greater visibility of the bone-metal interface (p < 0.001), considerable visibility of the surrounding soft tissues (p > 0.05) but worse visibility of the spinal cord (p < 0.001), including the consistency of fat suppression (p < 0.001) relative to the bandwidth-optimized STIR sequence.
With significantly reduced metal artifacts, the MAVRIC SL IR sequence can be implemented in patients undergoing ACDF surgery with PEEK cage-plate construct for 3.0 T MRI, despite the poor visibility of the spinal cord.
我们旨在研究与带宽优化的短反转时间反转恢复（STIR）序列相比，可变共振图像组合层板选择性反转恢复（MAVRIC SL IR）序列在3.0 T磁共振成像（MRI）上用于颈椎前路椎间盘切除融合术（ACDF）患者的多采集可行性。
对21例行ACDF手术并使用聚醚醚酮（PEEK）椎间融合器-钢板植入物的患者，采集并分析MAVRIC SL IR序列和带宽优化的STIR序列的矢状位配对MR图像。对配对正中矢状位图像的金属伪影区域进行定量比较。在定性分析中，由两名对图像和患者详细信息不知情的肌肉骨骼放射科医生基于五点量表，独立评估脂肪抑制的一致性以及解剖结构（骨-金属界面、周围软组织和脊髓）的可视性。
MAVRIC SL IR序列的应用使金属伪影的平均面积显著减少了48%（t = -7.141，p < 0.001）。根据两位 reviewers 的意见，MAVRIC SL IR序列显示骨-金属界面的可视性更高（p < 0.001），周围软组织的可视性相当（p > 0.05），但脊髓的可视性较差（p < 0.001），包括相对于带宽优化的STIR序列的脂肪抑制一致性（p < 0.001）。
尽管脊髓可视性较差，但MAVRIC SL IR序列可显著减少金属伪影，可用于接受ACDF手术并使用PEEK椎间融合器-钢板植入物的患者进行3.0 T MRI检查。
